作业帮请问下面这两个IT的含义和用法?
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/25 04:24:06
请问下面这两个IT的含义和用法?
1 It's 3 years since 从句；
2 It look as if从句.
如果是形式主语,也不对啊,SINCE和AS IF引导的都不是主语从句,
1 It's 3 years since 从句；
2 It look as if从句.
如果是形式主语,也不对啊,SINCE和AS IF引导的都不是主语从句,
作形式主语
一.主要用于It is+ adj./n.+ doing/to do/从句…句型.
Is it necessary for me to do so?我有必要这样做吗?
It is silly of him to do so.他这样做真是可笑.
It’s no good waiting here.在这里等没有用.
Is it certain that they will win?他们一定会赢吗?
It’s my duty to help you improve English.帮助你们提高英语水平是我的职责.
二,it用作形式主语有不少非常有用的句式,比如以下一些就值得注意：
1.用于it seems (appears) that…句式.如：
It seems that he knows everything.他好像什么都知道.
It appears that we may be mistaken.看来我们可能弄错了.
但是,英语一般不说it looks that…,可改用it looks as if….如：
It looks as if we’ll be late.我们似乎要迟到了.
一.主要用于It is+ adj./n.+ doing/to do/从句…句型.
Is it necessary for me to do so?我有必要这样做吗?
It is silly of him to do so.他这样做真是可笑.
It’s no good waiting here.在这里等没有用.
Is it certain that they will win?他们一定会赢吗?
It’s my duty to help you improve English.帮助你们提高英语水平是我的职责.
二,it用作形式主语有不少非常有用的句式,比如以下一些就值得注意：
1.用于it seems (appears) that…句式.如：
It seems that he knows everything.他好像什么都知道.
It appears that we may be mistaken.看来我们可能弄错了.
但是,英语一般不说it looks that…,可改用it looks as if….如：
It looks as if we’ll be late.我们似乎要迟到了.